Direct Time-of-Flight Measurement Accuracy Improvement With Perimeter-Gated SPADs
Direct time of flight (dToF) measurements are susceptible to errors because of system-level and circuit-level timing jitters. In addition, device-level uncertainty stemming from the dark noise of single-photon avalanche diode (SPAD) contributes to the aggregated error. We demonstrate that perimeter gating can help reduce the device-level detection inaccuracy for SPAD devices by reducing the dark noise probability. Specifically, in this work, we developed a general framework to accurately estimate the dToF jitters stemming from different source levels and analyzed a counter-based time to digital converter (TDC) circuit that are commonly used in such systems. We have also measured dToFs usi...
| Authors | Md Sakibur Sajal, Hunter Guthrie, Zexi Liu et al. |
|---|---|
| Primary category | physics.ins-det |
| Published | 24 June 2026 |
| Last updated at source | 24 June 2026 |
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